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MAHLE 3021307B Performance Piston Ring Set Steel Napier Bore - THM-13 4.005

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021307B
12 reviews
Sale Price

$6.58

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021307B is a high-performance piston ring set engineered for precision engine builds requiring 4.005-inch bore diameter cylinders. This professional-grade ring set features steel Napier compression ring technology with THM-13 coating for enhanced durability and wear resistance.

Key Specifications:

  • Bore diameter: 4.005 inches
  • Ring thickness: 0.043 inches
  • Radial wall thickness: 0.135 inches
  • Plain ring design for optimal cylinder wall contact
  • Steel Napier top ring configuration
  • THM-13 thermal coating for heat and wear resistance

MAHLE piston rings are manufactured to OE specifications and are trusted by engine builders worldwide for both performance and racing applications. The steel Napier design provides superior oil control and compression sealing, while the THM-13 coating reduces friction and extends ring life in high-stress environments.

Very easy site to navigate and order from.

when I get stuff from ebay it never fits but I am hoping this works on my 1995 f250 7.3 l diesel.

Very efficient

great product lowest price

Lowest prices. Never got at tracking number even after calling. Seat showed up in a week so not bad. Stock pic is slightly different. The vinyl is the same color as the other materials. Still a nice looking seat. A shade or 2 darker than a peanut brown color.

a bit to expensive

good options on products

Thank you !

Nice

So far so good. If the parts fit, even better.

It was a good experience thanks

Body Armor doors and mirrors shipped fast, got here in 2 days in perfect condition, Outstanding service!

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